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/*
* modem.h
* (c) 2019, Jonas Gunz, jonasgunz.de
* <Description>
* <License>
*/
#include <unistd.h>
#include <poll.h>
#include <string.h>
#include <signal.h>
#include <errno.h>
#include "misc.h"
#include "log.h"
#include "serial.h"
#define _AT "AT\r\n"
#define _AT_ANSWER "ATA\r\n"
#define _AT_ECHO_OFF "ATE0\r\n"
#define _AT_ECHO_ON "ATE1\r\n"
#define _AT_HANGUP "ATH\r\n"
#define _AT_CMD_MODE "+++\r\n"
#define _AT_MUTE "ATM0\r\n"
#define _AT_RESET_ON_DTR "AT&D3\r\n"
//Uncomment to ignore wait for modem ring
#define _MODEM_WAIT_RING
/*
* Waits for RING (ifdef _MODEM_WAIT_RING), accepts incoming calls. Return is non-zero when cennection fails.
* */
int modem_accept_wait(int fd);
/*
* Execute an AT command. return is non-zero if answer is not OK
* */
int modem_command(int fd, char* cmd, int timeout_ms);
/*
* Run a program with modem as STDIO. checks if connection is still alive & process is still active.
* will close fd on successful return
* */
int modem_run(int fd, int argc, char* argv[]);
/*
* Spawn a telnet server
* */
void dialup_server(struct prog_params params);
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